CVE-2021-45683: Binjs io Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-cw4j-cf6c-mmfv
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CVSS 9.8
CWE-908
Published
Advisory Summary

CVE-2021-45683 is a CRITICAL (CVSS 9.8) remote code execution vulnerability (CWE-908: Use of Uninitialized Resource) affecting Binjs io libraries in the crates.io ecosystem. The issue involves use of uninitialized resource in binjs_io.. Remediation is available in the latest vendor maintenance releases.

CVE-2021-45683 at a Glance

CVE Identifier CVE-2021-45683
GHSA Identifier GHSA-cw4j-cf6c-mmfv
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-908: Use of Uninitialized Resource
Affected Product Binjs io
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-45683

To remediate this vulnerability, upgrade all affected Binjs io dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

binjs_io fixed: Latest secure release 
Upgrade binjs_io to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for binjs_io

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-45683, inspect your project dependencies for Binjs io:

inspect dependencies for binjs_io

Analyze the terminal output to locate any version of Binjs io in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-908: Use of Uninitialized Resource, where the product uses or accesses a resource that has not been initialized. In Binjs io, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.

CVE-2021-45683 Affected Binjs io Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
binjs_io
 crates.io
≤ 0.2.1

References

NVD — CVE-2021-45683 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45683
Binjs io Source Repository REPOSITORY
https://github.com/binast/binjs-ref/issues/460
Binjs io Source Repository REPOSITORY
https://github.com/Yoric/binjs-ref
raw.githubusercontent.com/rustsec/advisory-db... WEB
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/binjs_io/RUSTSEC-2021-0085.md
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0085.html

Frequently Asked Questions

What is CVE-2021-45683?
CVE-2021-45683 is a security vulnerability in Binjs io involving Use of Uninitialized Resource in binjs_io. under CWE-908: Use of Uninitialized Resource.
Which Binjs io versions are affected?
Affected versions include releases prior to current release patches across affected packages: binjs_io.
What version fixes CVE-2021-45683?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is binjs_io affected?
Yes, binjs_io is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-45683?
CVE-2021-45683 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-45683?
CVE-2021-45683 is classified under CWE-908: Use of Uninitialized Resource (The product uses or accesses a resource that has not been initialized.).
How can I check crates.io dependencies for CVE-2021-45683?
Run the dependency tree command: 'inspect dependencies for binjs_io'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cw4j-cf6c-mmfv",
  "modified" : "2022-01-07T17:36:37Z",
  "published" : "2022-01-06T22:14:24Z",
  "aliases" : [ "CVE-2021-45683" ],
  "summary" : "Use of Uninitialized Resource in binjs_io.",
  "details" : "An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "binjs_io"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-45683"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/binast/binjs-ref/issues/460"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Yoric/binjs-ref"
  }, {
    "type" : "WEB",
    "url" : "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/binjs_io/RUSTSEC-2021-0085.md"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0085.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-908" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-06T18:05:53Z",
    "nvd_published_at" : "2021-12-27T00:15:00Z"
  }
}